<?php
$lol = "id"; // Change this if you please :)
$get = stripslashes($_GET['id']);
if (!isempty($get)) {
 //Filters out ./ so that you can't include files outside of where we want to include them :D|-<
 //Sure there are probably better ways to do this but this gets the job done.
 while ( $get[0] == '.' || $get[0] == '/' || $get[0] == '' ) {
  if ($get[0] == '.'){
  $get = ltrim( $get, '.' );
  }
  if ($get[0] == '/'){
  $get = ltrim( $get, '/' );
  }
  if ($get[0] == ''){
  $get = ltrim( $get, '' );
  }
 }

 //use "folder/" . $get . ".php"; if you would like to include from a folder that is not in the same directory as this file.
 $fname = $get . ".php";
 if ( file_exists( $fname ) ) {
  include( $fname );
 } else {
  echo "File not found!";
 }
} else {
 //This is the default page to include.
 include "news.php";
}
?>